Home / 400,970.25-553,338.92-219,689.05

Finding the Fourth Proportional to 400,970.25, 553,338.92 and 219,689.05

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Solution

The fourth proportional to 400,970.25, 553,338.92 and 219,689.05 is: 303,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,970.25 : 553,338.92 = 219,689.05 : x
  2. Step 2: Convert to fraction form
    400,970.25/553,338.92 = 219,689.05/x
  3. Step 3: Cross multiply
    400,970.25x = 553,338.92 × 219,689.05
  4. Step 4: Simplify right side
    400,970.25x = 121,562,501,662.83
  5. Step 5: Solve for x
    x = 121,562,501,662.83/400,970.25
  6. Step 6: Final answer
    x = 303,170.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.